A few short hours ago (near to block 479000) Seg-wit locked in when 95% of the blocks mined in activation period 20 had the corresponding bit set indicating that the miner of that block had updated to the software which activates SegWit upon command. That "activation command" will now initiate in the beginning of activation period 21 which is at block 479809 which by my calculation is in about 10 hours from now. All the hype that will bring with news articles and the very next phase - a lightning network transaction - will make bitcoin hit $4,000. It already popped to $3,200 as of this writing, just from the lock-in and continued sell-off of bitcoin cash. But wait and see what happens when the article comes out "First Bitcoin Lightning transaction, New York to Belgium in 12 milliseconds".